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Stainless steel piecewise adjustable resistor and adjustable brake resistor

A braking resistor, stainless steel technology, applied in the direction of resistance elements including multiple resistance elements

Pending Publication Date: 2019-05-24
SOUTHWESTERN INST OF PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are currently no brake resistor products on the market that have the characteristics of extra-large power, high current, high-voltage resistance and high-energy absorption.

Method used

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  • Stainless steel piecewise adjustable resistor and adjustable brake resistor
  • Stainless steel piecewise adjustable resistor and adjustable brake resistor
  • Stainless steel piecewise adjustable resistor and adjustable brake resistor

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Embodiment Construction

[0037] The present invention will be further described below by means of the accompanying drawings and specific embodiments.

[0038] like figure 1 As shown, the segmented adjustable resistor in this patent includes a resistor body 4 which is welded from end to end by short-circuiting stainless steel strips 6 with 5 segment resistors 9, and a U-shaped insulator installed between the resistor body 4 segment resistors 9 5. In order to facilitate installation on the resistor body 4, a resistor installation beam 3 is provided. The first end of the divided resistance on one side and the tail end of the divided resistance on the other side form the resistance input end 1 and the resistance output end 2 respectively.

[0039] like figure 2 As shown, the section of the U-shaped insulator 5 is U-shaped, and it is installed between the stainless steel bands of the resistors and fixed by bolts. The length direction of the U-shaped insulator 5 is perpendicular to the plane where the re...

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Abstract

The invention belongs to the field of electrical technology, in particular to a stainless steel piecewise adjustable resistor and an adjustable brake resistor. The adjustable resistor comprises a resistor body formed by welding a plurality of sub resistors end to end and U-shaped insulators. The head end of the sub resistor on one side and the tail end of the sub resistor on the other side form aresistor input end and a resistor output end respectively. Shorting copper bars are arranged on the resistor body. The U-shaped insulators are fixedly arranged between the stainless steel strips of the sub resistors. Through different lapping modes of the shorting copper bars, the resistor can output different resistances. The piecewise adjustable resistor is put into water to form a break resistor, and the resistance of the piecewise adjustable resistor and water determine the resistance of the brake resistor together. The piecewise adjustable resistor is in full contact with water. With theincrease of water temperature, the water absorbs a large amount of heat converted from electric energy. Thus, the safety of the piecewise adjustable resistor under very high current density is ensured, and fast speed reduction of a high-power and large-capacity motor is realized. The formed brake resistor has the advantages of high power, high current, resistance to high voltage and high energy absorption.

Description

technical field [0001] The invention belongs to the field of electrical technology, and in particular relates to a segmented adjustable resistor used for external connection of a large motor in the process of decelerating the motor and a brake resistor composed of the same. Background technique [0002] At present, the braking resistor should be mainly used in the dynamic braking of railway locomotives and in the circuit of frequency converter to control motor deceleration and braking. The basic principle of braking resistor application is: the rotating motor generates output voltage after excitation, and the motor forms a loop through the combination of external braking resistor or converter and braking resistor to generate current. During the deceleration process of the motor, the mechanical energy of the motor It is converted into electrical energy and consumed in the braking resistor in the form of heat energy. [0003] According to the classification of materials, brak...

Claims

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Application Information

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IPC IPC(8): H01C10/16
Inventor 宣伟民彭建飞李华俊徐丽荣王海兵石迎天赵世运李明辉刘传谋
Owner SOUTHWESTERN INST OF PHYSICS
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